On Thursday, 4 November, Sam Thomas, director of research at Pentest Limited, was able to get code execution on the Samsung Galaxy S21 using a three-bug chain that earned a full success label. It. Galaxy Security is a leading manufacturer of Security Cameras Systems (CCTV) in North America. We offer technical support for all our products. We offer affordable Quality CCTV video surveillance systems, cameras and accessories for the professional installers and resellers. At Galaxy Security, Your Security is Our Business.